#DAC of CO2 from the atm. is being explored as a tech. that can contribute to the goal of reaching #NetZero CO2 emissions.
A new study led by @DonglongFu1 showed that the use of zeolitic materials are feasible for DAC when it is integrated with H2O harvesting.
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"A combination of a commercially available desiccant, AQSOA-Z02A, and a mordenite-type zeolite (MOR) enables
continuous operation of a designed #DAC system comprised of two
parallel units with a regeneration temperature of 100°C," research finds. 2/7
Furthermore, "the system
using pure #zeolite alone requires regeneration at temperatures between 200°C and 300°C." 3/7
"Techno-economic analyses of 12 process
scenarios reveal that the energy requirement of the best scenario
investigated is 71 GJ/tCO2, while the conventional pure zeolitebased system requires 200 GJ/tCO2." #DAC 4/7
Research declared that, "the optimized system gives a
cost between $246 and $568 per ton CO2 #captured, depending on
the energy costs, while system operates at sub-0°C temperatures or with
integration of water harvesting, respectively." #DAC 5/7
📖 Read open-access study performed by @DonglongFu1 & Mark Devis funded by @Caltech entitled: "Toward the feasible direct air capture of
carbon dioxide with molecular sieves by water
management," here ⬇️ cell.com/cell-reports-p…
🚨A NEW study explores a theoretical #geoengineering approach to combat global warming — by altering Earth’s orbit.
Simulations suggest that shifting Earth ~5.8% farther from the Sun could cool the planet by roughly 7K, effectively offsetting projected warming.
DETAILS🧵1/10
2/ Climate models suggest global temperatures could rise by 7K by 2100, driven by greenhouse gas emissions.
This study asks: what if, instead of changing the atmosphere, we changed our position in space?
Specifically: increase Earth’s orbital radius.
3/ Basically, the paper builds on the science of Milankovitch cycles which is slow, natural variations in Earth’s orbit and tilt that have triggered past ice ages.
These cycles show that even slight orbital changes can dramatically affect climate.
CALL FOR RESEARCH PRESENTATION PROPOSAL—RFF and the Harvard Solar Geoengineering Research Program invite individuals to present research at their upcoming workshop
JPMorgan signed 13-year deal with CO280 to remove 450,000 tons of biogenic CO₂ from a U.S. pulp mill at under $200/ton—one of the largest and lowest-cost CDR deals to date.